already in your portfolio, or will those be exempt and only for the issues that are bought once the law gets changed? >> nobody knows for sure. that brings up a very important point, which is historically, the treasury department has never imposed taxes on anything retroactively. so this would be a very bad precedent if they decide to apply this to existing bonds that are currently outstanding. what they ought to do is apply this, if they're going to do it, on a foregoing basis, the bonds issued after january 1st, 2013, for example. >> we're showing the picture of the mub, the etf that tracks the municipal bond market. we've seen it decline since the beginning of roughly december. i think a lot of people are concerned about this. but your point is, that perhaps if you buy this year, the treasury would not put taxes on those holdings, correct? which could be a good time to buy muni bonds. >> you're playing a gamble on whether or not the treasury is going to protect you for this year or not. personally, i'm a little bit more worried about the fact that the taxes could apply retroactively.